CPO Sub Inspector: General Intelligence & Reasoning — Syllogism Practice MCQs (2026)

Practise these 20 carefully crafted MCQs on Syllogism designed for CPO Sub Inspector 2026. Each question carries a detailed explanation to reinforce learning.

Q1. All cats are dogs. All dogs are animals. Conclusion: All cats are animals?

  • A) True
  • B) False
  • C) Uncertain
  • D) Partially true
Answer: A) True — By transitivity: All cats→dogs→animals.

Q2. Some pens are books. All books are papers. Conclusion: Some pens are papers?

  • A) True
  • B) False
  • C) Uncertain
  • D) Cannot say
Answer: A) True — Some pens are books (which are papers) → Some pens are papers.

Q3. No bird is a fish. All fish are mammals. Conclusion: No bird is a mammal?

  • A) True
  • B) False
  • C) Uncertain
  • D) Partially true
Answer: B) False — Fish may be mammals but birds are not fish — birds could still be mammals from other paths.

Q4. All A are B. No B is C. Conclusion: No A is C?

  • A) True
  • B) False
  • C) Cannot determine
  • D) None follows
Answer: A) True — All A→B and No B→C → No A can be C.

Q5. Some students are teachers. Some teachers are doctors. Does: Some students are doctors?

  • A) True
  • B) False
  • C) Uncertain
  • D) None follows
Answer: C) Uncertain — 'Some' doesn't chain directly → uncertain.

Q6. All fruits are sweet. Some sweets are salty. Conclusion: Some fruits are salty?

  • A) True
  • B) False
  • C) Uncertain
  • D) Cannot say
Answer: B) False — Some sweets are salty doesn't mean the salty ones are fruits → uncertain.

Q7. All M are N. All N are O. All O are P. Conclusion: All M are P?

  • A) True
  • B) False
  • C) Uncertain
  • D) Partially true
Answer: A) True — Transitive chain: M→N→O→P.

Q8. No table is chair. Some chairs are beds. Conclusion: Some beds are not tables?

  • A) True
  • B) False
  • C) Cannot determine
  • D) None follows
Answer: A) True — Since some chairs are beds and no chairs are tables, those beds (that are chairs) are not tables.

Q9. All politicians are honest. Raju is a politician. Conclusion: Raju is honest?

  • A) True
  • B) False
  • C) Uncertain
  • D) None follows
Answer: A) True — Universal application.

Q10. Some A are B. All B are C. No C is D. Some A are not D?

  • A) True
  • B) False
  • C) Cannot say
  • D) Partially true
Answer: A) True — Some A are B(⊂C⊂not-D) → those some A are not D.

Q11. All roses are flowers. Some flowers are red. Can we conclude: Some roses are red?

  • A) True
  • B) False
  • C) Uncertain
  • D) None follows
Answer: C) Uncertain — The red flowers may or may not include roses → uncertain.

Q12. No cow is a horse. Some horses are donkeys. Conclusion: Some donkeys are not cows?

  • A) True
  • B) False
  • C) Cannot determine
  • D) All of above
Answer: A) True — Horses that are donkeys are not cows.

Q13. All cold things are ice. Conclusion: All ice is cold?

  • A) True
  • B) False
  • C) Uncertain
  • D) Partially true
Answer: B) False — Premise doesn't say all ice is cold, only cold→ice.

Q14. Some A are B. Some B are C. Can we conclude: Some A are C?

  • A) True
  • B) False
  • C) Uncertain
  • D) None follows
Answer: C) Uncertain — 'Some' does not allow transitive conclusion.

Q15. All lions are brave. Ram is brave. Conclusion: Ram is a lion?

  • A) True
  • B) False
  • C) Uncertain
  • D) Partially true
Answer: B) False — Being brave doesn't mean Ram is a lion — reverse conclusion is fallacy.

Q16. No P is Q. All Q are R. Conclusion: No P is R?

  • A) True
  • B) False
  • C) Uncertain
  • D) None follows
Answer: B) False — No P is Q and all Q are R, but P might still be R through another path → False/uncertain.

Q17. All X are Y. No Y is Z. Conclusion: No X is Z?

  • A) True
  • B) False
  • C) Uncertain
  • D) Partially true
Answer: A) True — X⊂Y and Y∩Z=∅ → X∩Z=∅.

Q18. Some books are pens. All pens are erasers. Conclusion: Some books are erasers?

  • A) True
  • B) False
  • C) Cannot say
  • D) None follows
Answer: A) True — Those books that are pens are also erasers.

Q19. All cars are vehicles. Some vehicles are heavy. Conclusion: Some cars are heavy?

  • A) True
  • B) False
  • C) Uncertain
  • D) Partially true
Answer: C) Uncertain — Heavy vehicles may or may not be cars → uncertain.

Q20. All A are B. Some B are C. No C is D. Which follows: Some A are not D?

  • A) Definitely true
  • B) Definitely false
  • C) Cannot say
  • D) Possibly true
Answer: D) Possibly true — We only know some B are C; we don't know if those particular B are A → possibly true.